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Big bass

This Kicker ZX300.1 mono subwoofer amplifier pumps your bass up loud and clear with up to 300 watts RMS of power. This sub amp runs reliably even when pushed hard, thanks to its heavy-duty internal components and the efficient cooling system it uses as it boosts your bass.

Works with almost any stereo

Kicker employs their Fail-Safe Integration Technology™ (FIT) to reject noise and stop any interference generated by your car's electronics, so you'll enjoy your music clean and pure. Speaker-level inputs make it simpler to hook this amp up to your factory system.

Bass controls

The steeply-sloped subsonic and low-pass filters keep the bass tight and up front in your car. A bass boost gives you even more kick, if you so desire. Be sure to get the optional wired remote level controller so you can crank up the level of fun from the front seat.

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

+12V: connect a wire from the remote
turn-on lead from your source unit to the REM terminal on
the amplifier; this is the preferred turn-on method

DC Offset: turns the amp on when a
6-volt DC offset is detected at the high-level speaker
inputs when the source unit is turned on

Audio: detects the incoming audio
signal from your source unit and automatically turns the
amp on; will not work if the input gain control is not
set properly

Bass Boost: The bass boost circuit provides a 12 dB boost
at 40Hz. The bass boost can be turned off if you prefer.

ZXRC Remote Bass Control: The bass output level can be
controlled remotely using an optional wired remote bass control (item number
20610ZXRC, sold separately).

Connections

Left Side of Amplifier:

+12V (power): set screw
terminal

REM (remote turn-on): set
screw terminal

GND (ground): set screw
terminal

Fuses: two 20-amp ATO fuses

Right Side of Amplifier:

Speaker Outputs: one pair of set screw
terminals

RCA Input: one pair of stereo RCA
input jacks; also used for speaker level input (item number
20609ZiSL needed, sold separately)

RCA Output: one pair of stereo RCA output jacks

Amp Wiring Kit: Kicker recommends using a 8-gauge wiring
kit with this amplifier.

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